Swing exerciser

ABSTRACT

A swing exerciser includes a base and a frame is pivotably connected to the base by a shaft. An exerciser such as a stationary bike is connected on the frame. A returning device includes a resilient bar which has a first end fixed to the base, and a second end fixed to the frame. The frame swings about the shaft and from a balanced position to an inclined position. The resilient bar is bent and the first and second ends of the resilient bar generate a returning force to pivot the frame from the inclined position to the balanced position.

FIELD OF THE INVENTION

The present invention relates to a swing exerciser, and more particularly, to a swing exerciser with a returning device which uses a resilient bar to return the exerciser.

BACKGROUND OF THE INVENTION

The conventional exercisers are able to be used in gems without worry of climate and some of the conventional exercisers provide swing feature to estimate the real biking and turning.

One of the known returning devices for returning the exerciser when it swings is a damping device or a resilient device such as a torsion spring connected between the frame and the fixed base. However, the shaft has only short arm of force while the weight of the bike is significant so that the damping device or the resilient device cannot bear the torque that the bike applies to. The efficiency is low when the damping device or the resilient device is installed to the shaft. When using the torsion spring with high coefficient of elasticity, such torsion spring is expensive and easily damaged.

The other known returning device includes two rubber bars which are located on two sides between the frame and the fixed base, when the frame swings, the rubber bar is compressed and generates a return force to return the frame. Each of the rubber bars is fixed to a disk, and a bolt extends through the disk and connected to the rubber bar. This increases maintenance and installed cost. Besides, the rubber bars generate limited force which cannot completely return the frame to its initial position.

The present invention intends to provide a swing exerciser which uses a resilient bar to generate returning force to return the exerciser from an inclined position to the balanced position.

SUMMARY OF THE INVENTION

The present invention relates to a swing exerciser and comprises a base and a frame is pivotably connected to the base by a shaft. An exerciser such as a stationary bike is connected on the frame. A returning device includes a resilient bar which has a first end fixed to the base, and a second end fixed to the frame. The frame swings about the shaft and from a balanced position to an inclined position. The resilient bar is bent and the first and second ends of the resilient bar generate a returning force to pivot the frame from the inclined position to the balanced position.

Preferably, the base has a first sleeve and the frame has a second sleeve. The first end and the second end of the resilient bar are respectively inserted into the first and second sleeves. The resilient bar can be bent to generate returning force. Preferably, the axis of the resilient bar and the axis of the shaft are located on the same plane. An angle between 70 to 110 degrees is defined between the two respective axes.

Preferably, the exerciser is a stationary bike and has a wheel, a handle, a seat and a damping device. The wheel is connected with two cranks and each crank is connected with a pedal. Two grips are respectively connected to two ends of the handle. The damping device provides damping force to the wheel.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view to show the swing exerciser of the present invention;

FIG. 2 is a perspective view to show the swing exerciser of the present invention;

FIG. 3 is a side view of the swing exerciser of the present invention;

FIG. 4 is a top view of the swing exerciser of the present invention;

FIG. 5 is a front view of the swing exerciser of the present invention; FIG. 6 is a rear end view to show that the frame is located at a balanced position relative to the base;

FIG. 7 is a rear end view to show that the frame is located at a left inclined position relative to the base, and

FIG. 8 is a rear end view to show that the frame is located at a right inclined position relative to the base.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 6, the swing exerciser of the present invention comprises a base 10 and a frame 20, wherein the base 10 is put on the floor and the frame 20 is pivotably connected to the base 10 by a shaft 11, and an exerciser 21 such as a stationary bike is connected on the frame 20. Two lugs 100 are connected to the base 10 and the shaft 11 extends through the two lugs 100. The shaft 11 is fixed to the frame 20 so that the frame 20 is pivotable relative to the base 10.

A returning device 30 is connected between the base 10 and the frame 20, and the returning device 30 comprises a resilient bar 31 which has a first end 310 and a second end 311 located in opposite to the first end 310. The first end 310 is fixed to the base 10 and the second end 311 is fixed to the frame 20. As shown in FIGS. 6 and 7, when the frame 20 swings about the shaft 11 and from a balanced position to an inclined position, the resilient bar 31 is bent and the first and second ends 310, 311 of the resilient bar 31 generate a returning force to pivot the frame 20 from the inclined position to the balanced position.

The base 10 has a first sleeve 32 and the frame 20 has a second sleeve 33. The first end 310 and the second end 311 of the resilient bar 31 are respectively inserted into the first and second sleeves 32, 33. Preferably, the first end 310 of the resilient bar 31 is fixed to the first sleeve 32 and the second end 311 of the resilient bar 31 is slidably inserted into the second sleeve 33. The first end 310 and the second end 311 of the resilient bar 31 are respectively in contact with the inside of the first and second sleeves 32, 33.

As shown in FIG. 3, the axis 312 of the resilient bar 31 and the axis 110 of the shaft 11 are located on the same plane, and an angle between 70 to 110 degrees is defined between the two respective axes 110, 312. The axis 110 of the shaft 11 extends horizontally. In detail, the axis 312 of the resilient bar 31 and the axis 110 of the shaft 11 are located on the same vertical plane.

The exerciser 21 is a stationary bike and comprises a wheel 22, a handle 23, a seat 24 and a damping device 25. The axis 220 of the wheel 22 is connected with two cranks 221 and each crank 221 is connected with a pedal 222. Two grips 230 are respectively connected to two ends of the handle 23. The user sits on the seat 24 and holes the grips 230 so as to operate the cranks 221 by treading the pedals 222. The damping device 25 provides damping force to the wheel 22. The frame 20 has a front section 200 and a rear section 201. The shaft 11 is located at the underside of the frame 20 and extends horizontally. The grips 230 are located at the front section 200 of the frame 20 and the wheel 22 is located at the rear section 201 of the frame 20. The resilient bar 31 is located at the rear section 201 of the frame 20, and the resilient bar 31 is located farer from the front section 200 than the wheel 22. The grips 230, the axis 220 of the wheel 22 and the seat 24 are located higher than the shaft 11. The first end 310 of the resilient bar 31 is located in flush with or lower than the shaft 11. A shortest distance 13 from the second end 311 of the resilient bar 31 to the axis 110 of the shaft 11 is at least ½ of a shortest distance 14 from the seat 24 to the axis 110 of the shaft 11. Alternatively, the length of the resilient bar 31 is at least longer than the length of the crank 221, preferably, the length of the resilient bar 31 is longer than two times of the length of the crank 221.

The resilient bar 31 is made by carbon fibers or glass fibers, both of which have great strength and elasticity so as to provide proper resilient force to allow the frame 20 to be pivoted relative to the base 10. Preferably, the resilient bar 31 is made by carbon fibers or glass fibers, and is a solid cylindrical bar.

The present invention provides the resilient bar 31 connected between the frame 20 and the base 10, and provides sufficient returning force when it is bent along with the swinging actions of the frame 20. The structure of the present invention has a simple structure and the expenses for maintenance and assembly is low.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

What is claimed is:
 1. A swing exerciser comprising: a base; a frame pivotably connected to the base by a shaft, an exerciser connected on the frame, and a returning device having a resilient bar which has a first end and a second end located in opposite to the first end, the first end fixed to the base and the second end fixed to the frame, the frame swinging about the shaft and from a balanced position to an inclined position, the resilient bar being bent and the first and second ends of the resilient bar generating a returning force to pivot the frame from the inclined position to the balanced position.
 2. The swing exerciser as claimed in claim 1, wherein the base has a first sleeve and the frame has a second sleeve, the first and the second ends of the resilient bar are respectively inserted into the first and second sleeves.
 3. The swing exerciser as claimed in claim 1, wherein the first end of the resilient bar is fixed to the first sleeve and the second end of the resilient bar is slidably inserted into the second sleeve.
 4. The swing exerciser as claimed in claim 1, wherein an axis of the resilient bar and an axis of the shaft are located on the same plane, an angle between 70 to 110 degrees is defined between the two respective axes.
 5. The swing exerciser as claimed in claim 1, wherein the exerciser is a stationary bike and has a wheel, a handle, a seat and a damping device, the wheel is connected with two cranks and each crank is connected with a pedal, two grips are respectively connected to two ends of the handle, the damping device provides damping force to the wheel.
 6. The swing exerciser as claimed in claim 5, wherein the shaft is located at an underside of the frame and extends horizontally, the grips are located at a front section of the frame and the wheel is located at a rear section of the frame, the resilient bar is located at the rear section of the frame, the resilient bar is located farer from the front section than the wheel, the grips, an axis of the wheel and the seat are located higher than the shaft, the first end of the resilient bar is located in flush with or lower than the shaft, a shortest distance from the second end of the resilient bar to the axis of the shaft is at least ½ of a shortest distance from the seat to the axis of the shaft.
 7. The swing exerciser as claimed in claim 1, wherein the resilient bar is made by carbon fibers.
 8. The swing exerciser as claimed in claim 7, wherein the resilient bar is made by carbon fibers and is a solid cylindrical bar.
 9. The swing exerciser as claimed in claim 1, wherein the resilient bar is made by glass fibers.
 10. The swing exerciser as claimed in claim 9, wherein the resilient bar is made by glass fibers and is a solid cylindrical bar.
 11. A swing exerciser comprising: a base; a frame pivotably connected to the base by a shaft, an exerciser connected on the frame, the exerciser being a stationary bike and having a wheel, a handle, a seat and a damping device, the wheel connected with two cranks and each crank connected with a pedal, two grips respectively connected to two ends of the handle, the damping device providing damping force to the wheel, and a returning device having a resilient bar which has a first end and a second end located in opposite to the first end, the first end fixed to the base and the second end fixed to the frame, the frame swinging about the shaft and from a balanced position to an inclined position, the resilient bar being bent and the first and second ends of the resilient bar generating a returning force to pivot the frame from the inclined position to the balanced position.
 12. The swing exerciser as claimed in claim 11, wherein the base has a first sleeve and the frame has a second sleeve, the first and the second ends of the resilient bar are respectively inserted into the first and second sleeves.
 13. The swing exerciser as claimed in claim 11, wherein the first end of the resilient bar is fixed to the first sleeve and the second end of the resilient bar is slidably inserted into the second sleeve.
 14. The swing exerciser as claimed in claim 11, wherein an axis of the resilient bar and an axis of the shaft are located on the same plane, an angle between 70 to 110 degrees is defined between the two respective axes.
 15. The swing exerciser as claimed in claim 11, wherein the shaft is located at an underside of the frame and extends horizontally, the grips are located at a front section of the frame and the wheel is located at a rear section of the frame, the resilient bar is located at the rear section of the frame, the resilient bar is located farer from the front section than the wheel, the grips, an axis of the wheel and the seat are located higher than the shaft, the first end of the resilient bar is located in flush with or lower than the shaft, a shortest distance from the second end of the resilient bar to the axis of the shaft is at least ½ of a shortest distance from the seat to the axis of the shaft.
 16. The swing exerciser as claimed in claim 11, wherein the resilient bar is made by carbon fibers.
 17. The swing exerciser as claimed in claim 16, wherein the resilient bar is made by carbon fibers and is a solid cylindrical bar.
 18. The swing exerciser as claimed in claim 11, wherein the resilient bar is made by glass fibers.
 19. The swing exerciser as claimed in claim 18, wherein the resilient bar is made by glass fibers and is a solid cylindrical bar. 